You can search for the Charleston NB postal codes by its streets and block numbers

Charleston Area Code is 506 and Time Zone is Atlantic (GMT -04:00).

Charleston Postal Code - New Brunswick

Charleston Postal Code is a six-character string that forms part of a postal address in Canada. Like British and Dutch postcodes, Charleston - NB postal codes are alphanumeric.

The first three characters (alpha-numeric-alpha) of the postal code which represent a geographic area in Charleston

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The last three characters denote a Charleston local delivery unit (LDU). An LDU denotes a specific single Charleston address or range of addresses, which can correspond to an entire small town, a significant part of a medium-sized town, a single side of a city block in larger cities, a single large building or a portion of a very large one, a single (large) institution in Charleston, New Brunswick, such as a university or a hospital, or a business that receives large volumes of mail on a regular basis

If you want to send a mail to Charleston City, you should use the corresponding Postal Code.